In the Harry Potter Universe, is Death deadly?

Question

This might sound like a very dumb question, but bear with me.

Acording to the question Does Death really exist in Harry Potter?

Death is presumably real since it gave 3 different objects to the Peverell Brothers. So, let's examine:

Is Death ever seen outside that encounter with the Peverell Brothers?

The youngest and smartest brother doesn't trust Death and asks for something that could hide him from the eyes of Death himself, so Death reluctantly gives him his Cloak of Invisibility. Afterwards, the brothers go their separate ways.

I presume that if Death had such a device, he would use it. But then, Death gave it away!

So, if Death itself couldn't be invisible, would someone be able to notice Death coming, and be able to fight it? Heck! From what we know, Voldemort would fight against Death if given a chance. Take a look at this part:

"That very night, another wizard crept upon the oldest brother as he lay, wine-sodden, upon his bed. The theif took the wand and, for good measure, slit the oldest brother’s throat.

And so Death took the first brother for his own."

Why wouldn't Death simply kill the first brother? Would the wand be able to defeat Death?

So, consider that someone managed to get hold of both the Elder Wand and the Cloak of Invisibility. That would mean that Death doesn't posess the cloak of which it could go unnoticed, and that it would be at least scared of facing the Master of the Elder Wand, let's also not forget that at some point Dumbledore & Harry posessed the 3 Deathly Hallows thus both becoming Masters of Death at some point.

Harry:

• Stone from the Ring
• Wand from Voldemort
• Cloak during his first year

Dumbledore:

• Stone from the Ring
• Wand from Grindelwald
• Borrowed the cloak from Harry

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So, essentially, we have two characters that became MASTERS OF FREAKIN' DEATH, should, for example Voldemort kill Harry, and posess the three hallows, would he be able to , should Death come to him, be able to see and kill Death?

Answer 1

The problem is Dumbledore kind of contradicts himself on whether the Hallows are real, which makes it very hard to directly answer this question.

On one page Dumbledore says this:

‘The Hallows, the Hallows,’ murmured Dumbledore. ‘A desperate man’s dream!’

‘But they’re real!’ [Harry]

‘Real, and dangerous, and a lure for fools,’ said Dumbledore.

_{Deathly Hallows - page 571 - Bloomsbury - chapter thirty-five, King's Cross}

On the next page he says this:

‘So it’s true?’ asked Harry. ‘All of it? The Peverell brothers –’

‘– were the three brothers of the tale,’ said Dumbledore, nodding. ‘Oh yes, I think so. Whether they met Death on a lonely road ... I think it more likely that the Peverell brothers were simply gifted, dangerous wizards who succeeded in creating those powerful objects. The story of them being Death’s own Hallows seems to me the sort of legend that might have sprung up around such creations.

_{Deathly Hallows - page 572 - Bloomsbury - chapter thirty-five, King's Cross}

Are you asking, Should Death be real, would he be deadly?

Answer 2

The fact that they came from Death is attributed to being likely to be wrong. They had been proven to be exceptional wizards, so it is said that they had most likely created the hallows themselves, rather than them being a gift from Death.